Diesel CO2 vs Voice Convert
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Diesel CO2
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This is a can calculate the fuel consumption (diesel) and carbon dioxide emissions from utility.
Voice Convert
This audio processing tool efficiently converts audio and video into text. It supports importing media from various sources and exporting transcripts as SRT files, simplifying multimedia project management and content recording.
- Audio to text conversion
- Video to text conversion
- Import from files, albums, other apps
- SRT file export
- Supports iPhone and iPad
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Voice Convert is a powerful audio processing tool that makes your communication more efficient and convenient. Easily import audio and video from files, photo albums, or other apps. With just one click, convert audio into accurate text and quickly export it as an srt file. Whether you are a professional handling multimedia projects or a student recording classroom content, Voice Convert can meet your needs and help you easily manage various audio resources in the information age.
Screenshots
Verdict
The clearest difference is update cadence: Voice Convert at weekly against Diesel CO2's every 10 months. On price, ads, in-app purchases and device support 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.
Diesel CO2 ships an update every 10 months, Voice Convert weekly. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.
| Parameter | Diesel CO2 | Voice Convert |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 10 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 126 MB |
| Age rating | 4+ | 4+ |
| Developer | Addison Mai | 永生 刘 |
In-app purchases
Diesel CO2
No in-app purchases
Voice Convert
No in-app purchases
Questions
Is Diesel CO2 free?
Is Voice Convert free?
Do Diesel CO2 or Voice Convert have ads?
Which is updated more often, Diesel CO2 or Voice Convert?
Other comparisons
