Comparison

Audio Tools vs Voltage Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Audio Tools

This audio editing app offers over 20 professional tools for trimming, merging, applying effects, and converting audio formats. It's designed for podcasters, music producers, and video creators, providing a comprehensive solution for all audio needs.

Highlights
  • Audio trimming and merging
  • Volume and effects adjustment
  • Format and channel conversion
  • Speed and pitch shifting
  • Audio restoration
  • Extract audio from video
  • High-quality recording
Features
Read full description

Audio Tools is a powerful, user-friendly audio editing application that integrates over 20 professional audio processing tools to meet all your needs, from basic trimming to advanced effects processing. Whether you are a podcaster, music producer, video creator, or audio enthusiast, Audio Tools provides a one-stop solution. Core Features: - Audio Trimming & Merging: Precisely trim, merge, and insert audio clips, with support for audio reversal. - Volume & Effects: Adjust volume, apply fade-in/fade-out, and add professional effects like reverb, delay, and chorus. - Format & Channel Conversion: Easily convert between audio formats (MP3, WAV, M4A, FLAC, etc.) and switch between mono and stereo channels. - Speed & Pitch Shifting: Adjust playback speed and apply fun voice-changing effects. - Audio Restoration: Automatically trim silent segments, with future support for noise reduction and vocal separation. - Specialty Tools: Extract audio from videos, apply radio effects, and generate white/pink noise. - Recording: Built-in high-quality recorder to capture inspiration on the go. Use Cases: - Podcast production and editing - Music creation and mixing - Video voice-overs and sound effects - Audiobook recording and editing - Daily audio memos and sharing Technical Advantages: - Supports a wide range of popular audio formats for import and export. - Powered by the robust FFmpeg engine for professional-quality results. - Intuitive user interface with all tools clearly accessible. - All processing is done locally on your device to protect your privacy. 【Auto-Renewable Subscription Instructions】 1. Subscription Services: Weekly subscription (1 week) and Monthly subscription (1 month). 2. Subscription Price: Subject to the information submitted in the IAP application. 3. Payment: Subscriptions are managed by the user. After confirmation of purchase, the payment will be charged to the user’s iTunes account. 4. Renewal: The Apple iTunes account will be charged within 24 hours before the end of the subscription period. Upon successful payment, the subscription will automatically renew for the next period. 5. Cancel Renewal: To cancel the subscription, open “Settings” → “iTunes & App Store” → tap “Apple ID” → “View Apple ID” → enter “Account Settings” → tap “Subscriptions”, then select the subscription and cancel it. If you do not turn off auto-renewal at least 24 hours before the end of the subscription period, the subscription will be automatically renewed. Privacy Policy: https://tapaudio.github.io//privacy/audiotools/en/ End User License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Feedback: For any questions, please contact us at: tapaudio@qq.com

About

Voltage Calculator

Features
Read full description

Voltage Calculator is a fast, focused toolbox for everyday electronics work. Three calculators in one clean, dark interface give you instant answers while you type. KEY FEATURES • Series & parallel calculator: combine up to 15 resistors or capacitors and read the result in every common unit • LED series resistor: enter supply voltage, forward voltage and forward current to get the right resistor and its power rating • Built-in reference table of typical LED forward voltages • Voltage divider: calculate the output voltage, or find the missing resistor for a target output • Live circuit diagrams that show your values in place • Results update instantly in multiple units as you type • Available in 24 languages

Screenshots

Audio Tools4 screens
Voltage Calculator4 screens

Verdict

The call

The clearest difference is in-app purchases: Voltage Calculator at none against Audio Tools's 2. On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Audio Tools sells 2 in-app purchases, starting at $0.99 per 7 days. Voltage Calculator asks for nothing beyond the download.

UpkeepUpdate frequency

Audio Tools ships an update every 3 weeks, Voltage Calculator every 2 weeks. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.

Scorecard1 real difference · 9 level
Audio Tools versus Voltage Calculator: the parameters behind the verdict, then further details
ParameterAudio ToolsVoltage Calculator
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size33 MB72 MB
Age rating4+4+
Developer泓 段ESDEV Teknoloji

In-app purchases

2 purchases

Audio Tools

Subscriptions2
  • Audio Tools – Weekly$0.997 Days
  • Monthly Audio Tools$1.991 Month
None

Voltage Calculator

No in-app purchases

Questions

Is Audio Tools free?
Audio Tools is free to download, with in-app purchases available.
Is Voltage Calculator free?
Voltage Calculator is free to download, with no in-app purchases.
Do Audio Tools or Voltage Calculator have ads?
Neither Audio Tools nor Voltage Calculator shows ads.
Which is updated more often, Audio Tools or Voltage Calculator?
Audio Tools ships an update every 3 weeks, and Voltage Calculator every 2 weeks. Most recently, Audio Tools was updated on October 5, 2026 and Voltage Calculator on October 3, 2026.

Other comparisons