# ResToolbox3 vs Seismoscope

The clearest difference is update cadence: ResToolbox3 at every 6 days against Seismoscope's every 2 weeks. ResToolbox3 also leads on iOS requirement (15.0 vs 17.0). 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.

ResToolbox3 ships an update every 6 days, Seismoscope every 2 weeks. The most recent releases landed on October 8, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | ResToolbox3 | Seismoscope |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/restoolbox3/id6759464322/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 25 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MobileReservoir](https://appshunter.io/developer/497057811) | [ESS Earth Sciences](https://appshunter.io/developer/1424839112) |

## What reviewers say

### ResToolbox3

[App page](https://appshunter.io/ios/app/restoolbox3/id6759464322)

This petroleum engineering calculator provides rapid answers for engineers in the field or office. It offers comprehensive tools for fluid properties, gas hydrate prediction, nodal analysis, production forecasting, volumetrics, and well testing, all accessible offline.

**Highlights:** Fluid properties (PVT) analysis, Gas hydrate prediction, Nodal analysis for wells, Production forecasting, Volumetric calculations, Well test analysis, Offline functionality

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

**In-app purchases:** none


### Seismoscope

[App page](https://appshunter.io/ios/app/seismoscope/id6799849611)

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

**In-app purchases:** none


## Frequently asked questions

### Is ResToolbox3 free?

ResToolbox3 is free to download, with no in-app purchases.

### Is Seismoscope free?

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

### Do ResToolbox3 or Seismoscope have ads?

Neither ResToolbox3 nor Seismoscope shows ads.

### Which is updated more often, ResToolbox3 or Seismoscope?

ResToolbox3 ships an update every 6 days, and Seismoscope every 2 weeks. Most recently, ResToolbox3 was updated on October 8, 2026 and Seismoscope on October 4, 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.*