# ZenCalm vs LightNeedle

The clearest difference is in-app purchases: LightNeedle at none against ZenCalm's 20. ZenCalm's advantage is iOS requirement (10.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ZenCalm sells 20 one-off in-app purchases. LightNeedle asks for nothing beyond the download.

ZenCalm ships an update every 3 weeks, LightNeedle fortnightly. The most recent releases landed on October 6, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | ZenCalm | LightNeedle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 80 MB | 23 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [利军 周](https://appshunter.io/developer/480079313) | [志超 杨](https://appshunter.io/developer/1835421899) |

## What reviewers say

### ZenCalm

[App page](https://appshunter.io/ios/app/zencalm/id1478548411)

**In-app purchases (20)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6枚Zen贝 | $0.99 | one-time |
| 8枚Zen贝 | $0.99 | one-time |
| 7天感恩训练 | $1.99 | one-time |
| 深度集中注意力课程 | $1.99 | one-time |
| 身体扫描课程 | $1.99 | one-time |
| 7天基础冥想训练课程 | $1.99 | one-time |
| 12枚Zen贝 | $1.99 | one-time |
| 7天压力管理训练课程 | $1.99 | one-time |
| 7天幸福感训练课程 | $1.99 | one-time |
| 7天注意力训练 | $1.99 | one-time |
| 7天焦虑舒缓训练课程 | $1.99 | one-time |
| 7天睡眠训练课程 | $1.99 | one-time |
| 7天自尊冥想训练 | $1.99 | one-time |
| 深度睡眠放松课程 | $1.99 | one-time |
| 深度睡眠舒缓课程 | $1.99 | one-time |
| 18枚Zen贝 | $2.99 | one-time |
| 30枚Zen贝 | $4.99 | one-time |
| 45枚Zen贝 | $6.99 | one-time |
| 1个月ZenCalm会员VIP | $7.99 | one-time |
| 1年ZenCalm会员VIP | $46.99 | one-time |


### LightNeedle

[App page](https://appshunter.io/ios/app/lightneedle-glp-1-tracker/id6759474081)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ZenCalm free?

ZenCalm is free to download, with in-app purchases available.

### Is LightNeedle free?

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

### Do ZenCalm or LightNeedle have ads?

Neither ZenCalm nor LightNeedle shows ads.

### Which is updated more often, ZenCalm or LightNeedle?

ZenCalm ships an update every 3 weeks, and LightNeedle fortnightly. Most recently, ZenCalm was updated on October 6, 2026 and LightNeedle on October 28, 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.*