# YMTC Yoyo vs 灵犀SDP

The clearest difference is update cadence: YMTC Yoyo at every 2 months against 灵犀SDP's every 5 months. YMTC Yoyo also leads on iOS requirement (9.3 vs 12.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

YMTC Yoyo ships an update every 2 months, 灵犀SDP every 5 months. The most recent releases landed on May 18, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | YMTC Yoyo | 灵犀SDP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Size | 283 MB | 20 MB |
| Requires iOS | **9.3** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yangtze Memory Technologies Co., Ltd](https://appshunter.io/developer/1467700884) | [北京指掌易科技有限公司](https://appshunter.io/developer/1149823074) |

## What reviewers say

### YMTC Yoyo

[App page](https://appshunter.io/ios/app/ymtc-yoyo/id1431663000)

**Features:** macOS Compatibility

**In-app purchases:** none


### 灵犀SDP

[App page](https://appshunter.io/ios/app/sdp/id1543872988)

**In-app purchases:** none


## Frequently asked questions

### Is YMTC Yoyo free?

YMTC Yoyo is free to download, with no in-app purchases.

### Is 灵犀SDP free?

灵犀SDP is free to download, with no in-app purchases.

### Do YMTC Yoyo or 灵犀SDP have ads?

Neither YMTC Yoyo nor 灵犀SDP shows ads.

### Which is updated more often, YMTC Yoyo or 灵犀SDP?

YMTC Yoyo ships an update every 2 months, and 灵犀SDP every 5 months. Most recently, YMTC Yoyo was updated on May 18, 2026 and 灵犀SDP on September 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*