Doodle vs Thread Gauge
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Doodle
This app allows users to create simple sketches and drawings, ranging from abstract shapes to representational figures. It's ideal for capturing fleeting ideas or for casual drawing during idle moments.
- Create simple sketches
- Draw abstract shapes
- Make representational figures
- Unfocused drawing tool
- Capture fleeting ideas
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A doodle is a type of sketch, an unfocused drawing made while a person's attention is otherwise occupied. Doodles are simple drawings that can have concrete representational meaning or may just be abstract shapes. Stereotypical examples of doodling are found in school notebooks, often in the margins, drawn by students daydreaming or losing interest during class. Other common examples of doodling are produced during long telephone conversations if a pen and paper are available. Popular kinds of doodles include cartoon versions of teachers or companions in a school, famous TV or comic characters, invented fictional beings, landscapes, geometric shapes and patterns, textures, banners with legends, and animations made by drawing a scene sequence in various pages of a book or notebook.
Thread Gauge
This app transforms your iPhone into a precise thread measurement tool. Simply photograph a screw next to a reference card to accurately determine its pitch and diameter, identifying the closest standard in both metric and imperial units.
- Measures metric and imperial threads
- Identifies closest standard match
- Uses reference card for scale
- On-screen guidance for photography
- Offline processing, no data tracking
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Thread Gauge turns your iPhone into a precision thread gauge. Photograph a screw next to a common reference card, and it measures the thread's pitch and diameter, then identifies the closest matching standard — in both metric and imperial. No calipers, no thread gauge set, no guesswork. Just a photo. HOW IT WORKS Lay the screw on a plain background, parallel to a reference card: a credit or ID card (85.6 mm) or a full-size SD card. Use the light intensity slider to apply enough light to minimize shadows around the screw. Use the bubble level to find the best lighting angle — a green dot inside the circle is ideal. Move your phone closer or farther to get the sharpest focus; the sharper the image, the more precise your measurement. Snap a photo or pick one from your library, choose which card you used, and tap Measure. ThreadGauge uses the card as a known scale to compute the real-world thread pitch and major diameter. It all runs on your device — no server, no account, no tracking. Nothing you photograph ever leaves your iPhone. WHAT IT IDENTIFIES - Metric coarse and fine (M-series) - Imperial UNC and UNF - Thread pitch (mm and TPI) and major diameter - The closest standard match, with a confidence indicator When two standards are nearly identical — for example, a #10-32 and M5×0.8 — Thread Gauge flags the ambiguity so you can confirm with a physical gauge instead of trusting a borderline read. FEATURES - Metric and imperial in one tool - Tap to look up any identified size online - On-screen guidance for lighting, angle, and framing - Made for makers, machinists, mechanics, and anyone holding a mystery bolt PRICING Your first 3 measurements are free. One simple in-app purchase unlocks unlimited measurements — no subscription, ever. PRIVACY Thread Gauge collects no personal data, and your photos stay on your device. Questions or feedback? Email imad.naqqash@gmail.com
Screenshots
Verdict
The clearest difference is rating: Thread Gauge at 5.0 against Doodle's 3.3. Thread Gauge also leads on in-app purchases (none vs 1) and update cadence (every 6 days vs every 3 weeks). Doodle's advantage is ratings volume (8 vs 1) and device support (3 vs 1). On price, ads and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Doodle sells 1 one-off in-app purchase. Thread Gauge asks for nothing beyond the download.
Thread Gauge holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: Doodle has 8 ratings behind it against 1, so its average is the more settled of the two.
Doodle ships an update every 3 weeks, Thread Gauge every 6 days. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.
| Parameter | Doodle | Thread Gauge |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (8 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 14.0% of reviews | — |
| Number of ratings | 8 — better | 1 |
| Update frequency | Every 3 weeks | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 7.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 15 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Orgajja Co Ltd | Imad Jawad |
Customer experience
Doodle
Thread Gauge
Bugs and requests
Doodle
Reported bugs
11 issues- App opens upside down then crashes
- Crashes immediately upon opening
- Crashes when tapping twice simultaneously
- Crashes when no WiFi/internet available
- Drawings save upside down or backwards
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- App freezes and closes unexpectedly
- Cannot clear drawings after update
- Only saves fraction of overall sketch
- App won't open at all
- Distorts images when uploading photos
- Paid version still contains advertisements
Requested features
11 requests- Eraser tool
- Undo button
- More color options and variety
- Different drawing modes/backgrounds
- Ability to change wooden board aesthetic
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- Stencils and stamps
- Text tool
- Better line quality and drawing precision
- Multiple drawing modes in free version
- Full screen drawing without ads blocking area
- Offline functionality without WiFi requirement
Thread Gauge
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Doodle
- additional features$0.99
Thread Gauge
No in-app purchases









