# Solinst vs FEI Rental Manager

The clearest difference is rating: FEI Rental Manager at 5.0 against Solinst's 1.0. Solinst's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

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

FEI Rental Manager holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 7 and 4 respectively.

Solinst ships an update every 5 months, FEI Rental Manager every 4 months. The most recent releases landed on September 5, 2026 and June 6, 2026 respectively.

## The numbers

| Metric | Solinst | FEI Rental Manager |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (7 ratings)](https://appshunter.io/ios/app/solinst/id854408232/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/fei-rental-manager/id1528779671/reviews)** |
| Number of ratings | **7** | 4 |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | **Free** | Ad-supported |
| Size | 19 MB | 18 MB |
| Requires iOS | 16.2 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Solinst Canada Ltd.](https://appshunter.io/developer/854408235) | [Field Environmental Instruments Inc.](https://appshunter.io/developer/1528779670) |

## What reviewers say

### Solinst

[App page](https://appshunter.io/ios/app/solinst/id854408232)

This app enables wireless communication with Solinst dataloggers for programming, data download, and diagnostics. It allows for efficient field data collection by leveraging smartphone technology, eliminating the need for laptops. Users can also perform field calibrations for conductivity monitoring.

**Highlights:** Wireless datalogger communication, Start/stop sampling, Data downloading and emailing, Scheduled and repeat sampling, GPS coordinate logging, Datalogger diagnostics, Field calibration

**Features:** Vision Pro support

**In-app purchases:** none


### FEI Rental Manager

[App page](https://appshunter.io/ios/app/fei-rental-manager/id1528779671)

Manage your environmental monitoring equipment rentals efficiently. This app allows active customers to schedule pickups, find equipment, locate branches, and access support resources easily.

**Highlights:** Schedule equipment pickups and returns, Browse instrument and supply catalog, Find nearest branch locations, Communicate with staff, Access project support resources

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Solinst free?

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

### Is FEI Rental Manager free?

FEI Rental Manager is free to download, with no in-app purchases.

### Which has better reviews, Solinst or FEI Rental Manager?

FEI Rental Manager is rated higher. Solinst averages 1.0 out of 5 from 7 ratings, while FEI Rental Manager averages 5.0 from 4 ratings.

### Do Solinst or FEI Rental Manager have ads?

FEI Rental Manager shows ads; Solinst does not.

### Which is updated more often, Solinst or FEI Rental Manager?

Solinst ships an update every 5 months, and FEI Rental Manager every 4 months. Most recently, Solinst was updated on September 5, 2026 and FEI Rental Manager on June 6, 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.*