# OWON iMeter vs PhosphorSSTV

The clearest difference is review sentiment: OWON iMeter at 50% against PhosphorSSTV's 0%. OWON iMeter also leads on price (Free vs $0.99) and device support (3 vs 1). On update cadence, ads and in-app purchases there is nothing between them.

OWON iMeter is free to download; PhosphorSSTV costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | OWON iMeter | PhosphorSSTV |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.3 (4 ratings)](https://appshunter.io/ios/app/owon-imeter/id1607020484/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | **Free** | Paid |
| Size | 56 MB | 3 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Fujian Lilliput Optoelectronics Technology Co., Ltd.](https://appshunter.io/developer/1049176635) | [Stuart Woolley](https://appshunter.io/developer/315697638) |

## What reviewers say

### OWON iMeter

[App page](https://appshunter.io/ios/app/owon-imeter/id1607020484)

This app enables remote monitoring, analysis, and data logging for smart Bluetooth multimeters. It allows for continuous real-time and offline recording, multi-device control, and abnormal data warnings, enhancing operator safety and simplifying data comparison.

**Highlights:** Remote real-time monitoring, Continuous offline recording, Multi-device control, Wireless safety monitoring, Graphic and table data presentation, Abnormal data warning system, Data backup and sharing

**Features:** macOS Compatibility

**In-app purchases:** none


### PhosphorSSTV

[App page](https://appshunter.io/ios/app/phosphorsstv/id6761005542)

Decode Slow Scan Television (SSTV) signals in real time using your iPhone's microphone. This app transforms audio tones into images, recreating the retro aesthetic of vintage monitors. It supports ten SSTV modes and offers advanced signal analysis tools.

**Highlights:** Real-time SSTV signal decoding, Supports ten SSTV modes, Authentic CRT display aesthetic, Live FFT spectrum analysis, Automatic VIS code detection, Image logging with metadata

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

**In-app purchases:** none


## Frequently asked questions

### Is OWON iMeter free?

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

### Is PhosphorSSTV free?

PhosphorSSTV costs $0.99, with no in-app purchases.

### Do OWON iMeter or PhosphorSSTV have ads?

Neither OWON iMeter nor PhosphorSSTV shows ads.

### Which is updated more often, OWON iMeter or PhosphorSSTV?

OWON iMeter ships an update every 3 months, and PhosphorSSTV every 3 months. Most recently, OWON iMeter was updated on October 24, 2026 and PhosphorSSTV 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.*