# MSPumper vs ChemLog

The clearest difference is in-app purchases: MSPumper at none against ChemLog's 2. MSPumper also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. ChemLog sells 2 in-app purchases, starting at $9.99 per month. MSPumper asks for nothing beyond the download.

MSPumper ships an update every 2 weeks, ChemLog every 2 months. The most recent releases landed on September 22, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | MSPumper | ChemLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chemlog/id6759417073/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | — | Subscription |
| Size | 35 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MobileStar](https://appshunter.io/developer/1691413764) | [Kyler Scheer](https://appshunter.io/developer/1572932798) |

## What reviewers say

### MSPumper

[App page](https://appshunter.io/ios/app/mspumper/id6449985672)

**Features:** macOS Compatibility

**In-app purchases:** none


### ChemLog

[App page](https://appshunter.io/ios/app/chemlog/id6759417073)

This app helps farmers and pesticide applicators create compliant, professional spray records digitally. It logs application details, weather data, field information, equipment, and pilot profiles, generating one-tap PDF reports and exporting data to CSV.

**Highlights:** Log chemical applications with weather data, Define and map fields with automatic acreage calculation, Track equipment and pilot details, Import chemical labels via barcode or photo, Generate one-tap PDF compliance reports, Share records with crew via AirDrop/Messages, Export data to CSV

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChemLog Monthly | $9.99 | per month |
| ChemLog Annual | $99.99 | per year |


## Frequently asked questions

### Is MSPumper free?

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

### Is ChemLog free?

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

### Do MSPumper or ChemLog have ads?

Neither MSPumper nor ChemLog shows ads.

### Which is updated more often, MSPumper or ChemLog?

MSPumper ships an update every 2 weeks, and ChemLog every 2 months. Most recently, MSPumper was updated on September 22, 2026 and ChemLog on October 1, 2026.

---

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