AR Ruler vs EarTimer
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
AR Ruler
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Aim at a corner and tap + to measure length, height, and area. Use it on tiles, furniture, height, and rooms. No account. Measurements are not uploaded. [Aim, then measure] Point the reticle at a corner, tap + to place a point, and the length shows in centimeters. Undo a mistake, or delete a line you do not need. Default unit is cm. You can switch units. [Length, height, area] Free mode follows the plane β good for tiles and diagonals. Level mode stays at the same height to pull an edge β tables and window width. Vert mode measures height, door frames, and cabinets. Close a loop back to the start to get area. [Home and renovation] Measure rooms, tiles, curtains, wardrobes, sofas, tables, and chairs. Move the iPhone slowly toward a textured floor or an edge, then tap after the plane appears. [On-device, free, data stays here] Camera is required for live AR measuring. No account. No measurement history is collected. Smooth glass or screens can miss. Aim at a textured edge. Privacy: https://minifanyou.com/privacy-jf.php?app=ARιε°Ίζ΅ι
EarTimer
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A quiet break. A focused study session. A reminder through your headphones. EarTimer helps you keep track of time in libraries, shared workspaces, and other quiet places. Set a countdown and hear the timer through connected wired headphones or Bluetooth earphones, including AirPods. MAKE TIME FOR YOUR NEXT TASK β’ Take a short break between study or work sessions. β’ Set aside time to read or focus without watching the clock. β’ Keep track of a quiet rest in a shared space. SET, START, AND STAY IN CONTROL β’ Choose hours, minutes, and seconds. β’ Check the current audio output before you start. β’ Test playback through your connected headphones. β’ Pause, resume, or cancel a running timer. β’ See and control your timer in a Live Activity on the Lock Screen, and in the Dynamic Island on supported iPhones. HOW HEADPHONE PLAYBACK WORKS EarTimer starts timer audio when a supported external audio output is connected. If that output disconnects, the app pauses its audio rather than intentionally routing the timer sound to the iPhone speaker. Without headphones, the system timer may still show an alert and vibrate; the selected timer sound does not start. KEEP THESE LIMITATIONS IN MIND Keep EarTimer running; do not force-quit it before your timer ends. Headphone audio is not guaranteed after force-quitting, an iPhone restart, or termination by iOS. Calls, Siri, other audio apps, Bluetooth reconnection, and system conditions can interrupt playback. Reopen EarTimer with headphones connected to prepare playback again. Check your audio output and volume before use. Do not rely on EarTimer as your only alarm for an important wake-up or deadline. FREE WITH OPTIONAL AD REMOVAL The free app can show a non-personalized banner ad on the Timer screen. A one-time Remove Ads in-app purchase removes the banner. Customers who purchased EarTimer before it became free retain their ad-free experience. Purchases can be restored in Settings. Advertising and privacy choices are explained in the app's privacy policy. Requires an iPhone with iOS 26.0 or later. Headphone audio requires a compatible connected output; Live Activity availability depends on the device and system settings.
Screenshots
Verdict
The clearest difference is price: EarTimer at Free against AR Ruler's $0.99. AR Ruler's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
EarTimer is free to download; AR Ruler costs $0.99 up front. EarTimer sells 1 one-off in-app purchase. AR Ruler asks for nothing beyond the download.
| Parameter | AR Ruler | EarTimer |
|---|---|---|
| Price | $0.99 | Free β better |
| Update frequency | β | Every 3 weeks |
| Ads | No β better | Yes |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad β better | iPhone |
| Requires iOS | 26.5 | 26.0 β better |
| Further details β not scored | ||
| Size | 1 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | δΏη½ ζ | Tomokazu Shinozaki |
In-app purchases
AR Ruler
No in-app purchases
EarTimer
- Remove Ads$1.99






