AOI vs WaterTesting
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AOI
This utility app allows users to control iPhone camera modules, adjust parameters, and switch camera views. It also enables local server and client creation for interactive experiences and includes a dice game for friendly competition.
- iPhone camera module control
- Customizable camera parameters
- Local server and client setup
- Interactive communication
- Dice rolling mini-game
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调用iPhone相机模组，切换不同的相机显示，可以自主设置相机参数 建立本机的服务器和客户端，实现交互 投掷骰子小游戏，和朋友比较大小
WaterTesting
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水质检测工具，可检测pH等
Screenshots
Verdict
The clearest difference is update cadence: WaterTesting at every 3 weeks against AOI's every 6 months. WaterTesting also leads on device support. On price, in-app purchases and iOS requirement 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.
AOI ships an update every 6 months, WaterTesting every 3 weeks. The most recent releases landed on June 21, 2026 and September 12, 2026 respectively.
| Parameter | AOI | WaterTesting |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 months | Every 3 weeks — better |
| Ads | — | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | — | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 | 14.0 |
| Further details — not scored | ||
| Size | 1 MB | 16 MB |
| Age rating | 4+ | 17+ |
| Developer | 杰 李 | Shanghai Ruosull Technology Co., Ltd |
In-app purchases
AOI
No in-app purchases
WaterTesting
No in-app purchases
