# NUS Module Planner vs Sum Serenity

The clearest difference is in-app purchases: NUS Module Planner at none against Sum Serenity's 1. NUS Module Planner also leads on update cadence (weekly vs every 3 months). Sum Serenity's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.6). On price and device support there is nothing between them.

Both are free to download. Sum Serenity sells 1 one-off in-app purchase. NUS Module Planner asks for nothing beyond the download.

NUS Module Planner ships an update weekly, Sum Serenity every 3 months. The most recent releases landed on September 25, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | NUS Module Planner | Sum Serenity |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 3 months |
| Size | 21 MB | 33 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Clarence Chng](https://appshunter.io/developer/963958848) | [Blossom Labs](https://appshunter.io/developer/1723890403) |

## What reviewers say

### NUS Module Planner

[App page](https://appshunter.io/ios/app/nus-module-planner/id1633785814)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sum Serenity

[App page](https://appshunter.io/ios/app/sum-serenity/id6475314608)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Serenity Seeker | $1.99 | one-time |


## Frequently asked questions

### Is NUS Module Planner free?

NUS Module Planner is free to download, with no in-app purchases.

### Is Sum Serenity free?

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

### Do NUS Module Planner or Sum Serenity have ads?

NUS Module Planner shows ads; Sum Serenity does not.

### Which is updated more often, NUS Module Planner or Sum Serenity?

NUS Module Planner ships an update weekly, and Sum Serenity every 3 months. Most recently, NUS Module Planner was updated on September 25, 2026 and Sum Serenity on September 20, 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.*