3D Shape Identifier vs Infinite Ruler
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
3D Shape Identifier
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Identify any 3d shape! Use camera or photo from gallery - instant result - high accuracy - no ads
Infinite Ruler
Measure objects with precision using a digital ruler that extends beyond your screen. Choose fractional inch or centimeter units and calibrate for accuracy. Ideal for quick measurements when a physical tool isn't available.
- Fractional inch or centimeter measurement
- Adjustable precision (1/8, 1/16, 1/32 inch)
- Extendable ruler beyond screen length
- Customizable zero point
- Live distance markers
- On-device calibration
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Infinite Ruler The perfect app for when you've forgotten your tape measurer in the shed and want to know how tall your coffee mug is. Or maybe you need to settle an argument about how big your cat's head is. Measure in centimeters or fractional inches, then keep going beyond the length of one screen. • Choose 1/8, 1/16 or 1/32-inch precision • Move the zero point to start anywhere • Place A and B markers for a live distance • Continue measuring across as many ruler pages as you need • Put the scale on the left or right edge • Calibrate per phone for better real-world accuracy Your measurements and calibration values stay on your device.
Screenshots
Verdict
The clearest difference is update cadence: 3D Shape Identifier at daily against Infinite Ruler's every 7 months. 3D Shape Identifier also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.2). On price, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
3D Shape Identifier ships an update daily, Infinite Ruler every 7 months. The most recent releases landed on September 25, 2026 and September 21, 2026 respectively.
| Parameter | 3D Shape Identifier | Infinite Ruler |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Daily — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 2 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Fedor Derzhavin | Eric Savoie |
In-app purchases
3D Shape Identifier
No in-app purchases
Infinite Ruler
No in-app purchases
Questions
Is 3D Shape Identifier free?
Is Infinite Ruler free?
Do 3D Shape Identifier or Infinite Ruler have ads?
Which is updated more often, 3D Shape Identifier or Infinite Ruler?
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