ström vs VOSIS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ström
A simple internet radio player that supports various audio formats. Customize presets with your favorite stations or enjoy the included fluid, lake, and Swedish radio channels. It can also play streams of limited duration.
- Plays mp3, wav, aifc, aiff, m4a, mp4, caf, aac
- Customizable radio presets
- Includes fluid, lake, and Swedish radio channels
- Supports finite length streams
- Minimalistic interface
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Ström is a minimalistic streaming internet radio. It is capable of playing the formats mp3, wav, aifc, aiff, m4a, mp4, caf and aac. Ström comes preset with fluid radio, lake radio and swedish radio p1, p2 and p3, but these can easily be changed to the user's choice. Of course, ström is also capable of playing streams of a finite length. Powered by Sparrow. Made by humble.
VOSIS
This app transforms image data into sound, allowing for unique musical compositions and experimental sound design. It offers control over pitch, timbre, and envelopes to create shape-timbre relationships from visual input.
- Image sonification
- Visual music composition
- Experimental sound design
- Pixel luminance audification
- Shape-timbre relationships
- Adjustable pitch and timbre
- ADSR envelope control
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VOSIS is a synthesizer combining audification of greyscale pixel data with several image filters. It is a tool for image sonification, visual music composition, and experimental sound design. The audification of pixel luminance values creates shape-timbre relationships. Pixel scan rate is controlled in terms of note interval, octave, and scale to give varying pitch between image regions. The ADSR envelope allows one to play images as a non-linear sequence of pitches with varying wavetable/timbre. For more features including presets and unlimited recording see VOSIS Pro. Visit vosis.app for sound example, demo videos, and user guide!
Screenshots
Verdict
The clearest difference is rating: VOSIS at 4.2 against ström's 3.4. VOSIS also leads on review sentiment (86% vs 60%). ström's advantage is update cadence (every 2 months vs every 8 months) and ratings volume (28 vs 5). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
VOSIS holds the better App Store score, 4.2 against 3.4. That said, the two scores are not equally well evidenced: ström has 28 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 60% of ström's written reviews are positive against 86% of VOSIS's.
ström ships an update every 2 months, VOSIS every 8 months. Both last shipped on November 1, 2026.
| Parameter | ström | VOSIS |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (28 ratings) | 4.2 (5 ratings) — better |
| Positive reviews | 60.0% of reviews | 85.7% of reviews — better |
| Number of ratings | 28 — better | 5 |
| Update frequency | Every 2 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 7.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 2 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Erik Sigth | Life Orange LLC |
Customer experience
ström
VOSIS
In-app purchases
ström
No in-app purchases
VOSIS
No in-app purchases
