Midori Paintable Stamp Habit Tracker: Size & Ink
The Midori Paintable Stamp Habit Tracker (35392006) is a pre-inked stamp from Midori of Japan that prints a habit-tracking grid for one month. Its square body is 61 × 61 × 19 mm and sized for a 70 mm sticky note. Oil-based black ink lets you color days in with water-based markers, and Midori says it stamps about 1,000 times.
On this page
Product facts
- Product
- Midori Paintable Stamp Pre-Inked, Habit Tracker (35392006)
- Brand
- Midori
- Brand origin
- Japan
- Made in
- Not stated*
- Material
- ABS and polycarbonate body; PE stamp face; oil-pigment-based black ink
- Released
- June 2020*
- Price range
- $$$5–20 per stamp or ink pad
Notes on these facts
- Made by Designphil Inc. (Tokyo). Country of manufacture not stated: Midori's Japanese online store doesn't state a country of origin on the Habit Tracker page (35392006). It gives MADE IN CHINA for several Half Size Paintable Stamps, but that isn't a statement about this stamp, so check the pack. Source. Price: example listing. Released: Designphil's press release dates the launch of the pre-inked Paintable Stamp range, 20 designs including the Habit Tracker, to June 25, 2020.
- Price bands are typical US retail, checked October 2026. Conversions to US dollars are approximate, at October 2026 rates (US$1 = ¥158 = ₩1,330 = NT$32.5 = CN¥6.7 = SEK 9.9 = DKK 6.7 = ₺49.6 = C$1.41 = A$1.43 = CZK 21.7; €1 = US$1.12; £1 = US$1.32; CHF 1 = US$1.21).
Key takeaways
- Midori lists the body at H61 × W61 × D19 mm (2.4 in square, 0.7 in deep) and says it fits a 70 mm (2.8 in) square sticky note.
- Midori says it prints about 1,000 times and can be re-inked with a separately sold refill ink.
- The ink is oil-based pigment black, so Midori says water-based markers colored over it won't bleed.
- Midori launched the pre-inked Paintable Stamps on June 25, 2020, in 20 designs including the Habit Tracker, at ¥880 (about US$5.60) plus tax.
- Midori's Japanese store lists it at ¥1,078 (about US$6.80) with tax; JetPens showed 41 reviews for it.
What is the Midori Paintable Stamp Habit Tracker?
It’s a pre-inked stamp that prints a one-month habit tracker: you write the habit at the top and color in each day you kept it. Midori, a Designphil brand from Tokyo, sells it as ペインタブルスタンプ 浸透印 ハビットトラッカー柄 (Paintable Stamp, pre-inked, Habit Tracker pattern), item 35392006.
“Paintable” is the point: the black outline is made to be colored over. Midori’s photos show a “Let’s try it!” banner for the habit’s name, the words “habit tracker” and a seven-column grid numbered 1 to 31.
Midori Paintable Stamp Habit Tracker specs
| Spec | Value |
|---|---|
| Item | 35392006 |
| Type | Pre-inked (浸透印), no ink pad needed |
| Body (H × W × D) | 61 × 61 × 19 mm (2.4 × 2.4 × 0.7 in) |
| Picture | about 50 × 50 mm (Midori English page, full-size range) |
| Package | 160 × 85 × 20 mm |
| Prints | about 1,000 (Midori) |
| Ink | Oil-based pigment, black |
| Materials | ABS and polycarbonate body; PE face |
| Refill | Separate refill ink |
| Price in Japan | ¥1,078 (about US$6.80) with tax |
| Launched | June 25, 2020 |
| Made in | Not stated |
All figures come from Midori’s Japanese online store and Designphil’s press releases unless marked.
How do you use the habit tracker stamp?
Stamp it, write the habit in the banner, then color the box for each day you did it. Midori suggests stamping it in a notebook, a diary or on sticky notes, and decorating it in your own colors.
Midori says the oil-based ink won’t bleed when you color over it with water-based markers, such as a Zebra Mildliner. It also says it pairs with its えらべる付せん (Selectable sticky notes), which launched with the stamps.
Will it bleed through planner paper?
It can on thin paper, so test it first. Midori warns that drying can be slower, and the ink can spread, depending on the paper.
One JetPens reviewer found the ink bold and smudge-free but said it bleeds through Hobonichi paper, so they stamp on sticky notes instead. That matters for thin-paper planners such as the Hobonichi Techo.
How does it compare to other Midori stamps?
The Habit Tracker is a full-size square; Half Size stamps are half as deep, and the rotating stamp prints dates.
| Habit Tracker | Half Size | Rotating Date | |
|---|---|---|---|
| Body | 61 × 61 × 19 mm | 61 × 30.5 × 19 mm | 104 × 60 × 38 mm |
| Ink | Pre-inked, oil-based | Pre-inked, oil-based | Separate ink pad |
| Prints | One month grid | One small block | Dates and symbols |
| Band | $$ | $$ | $$$ |
For tiny icons instead of a grid, see the Kodomo no Kao Pochitto6, six small stamps in one stick.
Is it popular?
It’s one of the most-reviewed pre-inked planner stamps at JetPens, with 41 reviews in a search listing in October 2026. Midori also gave the design a brown-ink version, Habit Tracker Cat (35694006), in its Soft Color range from May 20, 2026.
We chose it as a top US planner stamp after checking Hero Arts. Hero Arts’ own best-selling list on October 21, 2026 was led by a clearance set marked down from US$15.99, followed by seasonal releases, so it gave no clear top seller to write about.
Where is it made?
Midori doesn’t say for this stamp. Its Japanese store lists several Half Size Paintable Stamps as made in China, but the Habit Tracker page gives no country, so check the pack.
How much does it cost?
It falls in our $$ band ($5–20 per stamp). Midori’s Japanese store lists it at ¥1,078 (about US$6.80) with tax; at launch in 2020 the price was ¥880 (about US$5.60) plus tax.
Frequently asked questions
How big is the Midori Paintable Stamp Habit Tracker?
Midori lists the body at 61 × 61 × 19 mm (about 2.4 × 2.4 × 0.7 in) and says it fits a 70 mm square sticky note. Midori's English page gives the picture of a full-size Paintable Stamp as about 50 × 50 mm.
Does it need an ink pad?
No. It's a pre-inked (浸透印) stamp with the ink soaked into the face, so you just press it. Midori says it prints about 1,000 times, and you can add its refill ink when prints fade.
Can you color over the Midori habit tracker stamp?
Yes, that's the point of the Paintable range. Midori says the oil-based ink won't bleed when you color over it with water-based markers.
Does the Midori stamp bleed through planner paper?
It can on thin paper. Midori warns that drying can be slower and the ink can spread on some papers, and one JetPens reviewer said it bleeds through Hobonichi paper, so they stamp it on sticky notes.
How many days does the habit tracker grid have?
Midori's photos show seven columns of numbered boxes from 1 to 31, enough for any month, under a banner where you write the habit.
What's the difference between this and the Half Size Paintable Stamps?
The Habit Tracker is a full-size, square 61 × 61 mm stamp. Half Size stamps are 61 × 30.5 mm, and two of them stack on one full-size stamp.
Where is the Midori Paintable Stamp made?
Midori doesn't state a country for the Habit Tracker. Its Japanese store lists several Half Size Paintable Stamps as made in China, so check the pack.
Sources
- ペインタブルスタンプ 浸透印 ハビットトラッカー柄(35392006) (Midori Japan online store, "Paintable Stamp, pre-inked, Habit Tracker": H61 × W61 × D19 mm, ABS + polycarbonate, PE face, oil-pigment black ink, about 1,000 prints, fits 70 mm sticky notes, ¥1,078 with tax)
- 『ペインタブルスタンプ 浸透印』『えらべる付せん』新発売 (Designphil press release: pre-inked Paintable Stamps, 20 designs including Habit Tracker, ¥880 plus tax, on sale June 25, 2020)
- 『ペインタブルスタンプ 回転印＜ソフトカラー＞』『ペインタブルスタンプ 浸透印＜ソフトカラー＞』新発売 (Designphil press release: brown-ink Soft Color stamps incl. Habit Tracker Cat, from May 20, 2026)
- ペインタブルスタンプ 浸透印 ソフトカラー ハビットトラッカー ネコ柄 茶(35694006) (Midori Japan online store: brown-ink Habit Tracker Cat, 61 × 61 × 19 mm, ¥1,078)
- Midori: Paintable Stamp (English range page: full-size pre-inked stamp 61 × 61 × 19 mm, picture about 50 × 50 mm, about 1,000 uses)
- JetPens: Midori Paintable Stamp Pre-Inked, Habit Tracker, reviews (41 reviews; seen in a search listing)
- JetPens: Midori Paintable Stamps Pre-Inked (category)
- ペインタブルスタンプ 浸透印 ハーフ 時間の記録柄(35511006) (Midori Japan online store: Half Size, 30.5 × 61 × 19 mm, made in China)
- Hero Arts: Hero Arts Stamps, sorted by best selling (checked October 21, 2026; led by a clearance set)