存丫 vs WTAI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
存丫
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存丫是配合智能闪存使用的存储工具软件 SkyBox是一款由甚湖科技开发的，业界独有的wifi pssd（便携式无线固态硬盘）。借助SkyBox，每个人都能轻松的掌控自己的各种数据。 形影相随 SKYBOX的尺寸仅有14.2×7×1.8cm，重量仅有220g。和最新的iPhone 16 ProMax相比，重量一样，尺寸上还要小一圈，让你能够在出行时轻松携带，常伴左右。 真“无线” SKYBOX自带供电和wifi 6模组，彻底抛弃连接传统PSSD的有线模式，让手机、电脑与SkyBox的连接更加方便快捷、随心所欲。与手机、电脑快速建立连接，传输速度高达80MB/s。备份手机相册（按10000张照片，每张10M计算），仅需半小时，且不占用手机流量。 手机瘦身 SkyBox可以通过无线，自动备份手机相册中的照片视频。通过反向检索已备份文件，完成一键删除，达到手机瘦身的目的。对iphone，SkyBox不仅备份和快速清理手机本地相册，还可通过云同步，备份和清理icloud中的照片和视频。 保险箱 关于个人隐私/重要数据，SKYBOX还具有保险箱功能，给你双重安全保障，保险箱可创建多个，并可设置不同密码，输入相应密码，即可进入对应保险箱查看其中数据；
WTAI
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这是一款专为智能 IoT 产品开发的 APP，支持设备配网，并提供智能体创建与互动、模型切换、音色选择与复刻等功能
Screenshots
Verdict
存丫 and WTAI are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 20, 2026 and August 21, 2026 respectively.
| Parameter | 存丫 | WTAI |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 196 MB | 24 MB |
| Age rating | 4+ | 12+ |
| Developer | 亿次网联(杭州)科技有限公司 | Waytronic Electronics Company Limited |
In-app purchases
存丫
No in-app purchases
WTAI
No in-app purchases
