Comparison

Mobile Oscilloscope vs Randomness Generator

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

Head to head
About

Mobile Oscilloscope

Transform your phone into a handheld oscilloscope for detailed audio signal analysis. Professionals can also use it for circuit measurements. Features include precise frequency measurement, multiple trigger modes, and gesture-based zooming.

Highlights
  • Audio signal analysis
  • Circuit analysis for professionals
  • Detailed signal parameter display
  • Accurate frequency measurement
  • Multiple trigger modes
  • Gesture-based measurement and zooming
  • Customizable interface colors
Read full description

This application turns your phone into a powerful handheld oscilloscope for audio signal analysis (professionals can also use for circuit analysis). The signal parameters can be displayed in detail, including: maximum value, minimum value, average value, effective value and frequency, and the frequency measurement is very accurate. There are multiple trigger modes. The trigger modes are: automatic mode, normal trigger and single trigger; the trigger edges are: rising edge trigger, falling edge trigger, rising or falling edge trigger, jump trigger and differential trigger; the trigger value can be selected. With the measurement function, it is freely measured in the horizontal and vertical directions, gesture operation, easy to use. Waveforms can be freely zoomed with gestures or buttons. Supports interface color selection. Has a storage depth of 10 seconds. This application is normally used for audio signal measurement without any risk. Circuit measurement special instructions: Professionals can use this application for circuit measurements and the electrical signal is input via the microphone channel of the headset. Please pay attention to safety: You must have enough professional knowledge. The high voltage circuit must go through the isolator and attenuator. Conventional low-voltage circuits must also add an attenuator and then enter the phone. Circuit measurement is risky and the author of this application will not be liable for any loss of personnel or equipment resulting from the correct or incorrect use of this application.

About

Randomness Generator

Features
Read full description

Fast and secure access to random values. - Cryptography-grade randomness, 100% local - Available on all your devices with iCloud clipboard - No history saved anywhere

Screenshots

Mobile Oscilloscope4 screens
Randomness Generator1 screens

Verdict

The call

The clearest difference is price: Randomness Generator at Free against Mobile Oscilloscope's $1.99. Randomness Generator also leads on update cadence (every 2 days vs every 30 months). Mobile Oscilloscope's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement 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

Randomness Generator is free to download; Mobile Oscilloscope costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Mobile Oscilloscope ships an update every 30 months, Randomness Generator every 2 days. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.

Scorecard3 real differences · 7 level
Mobile Oscilloscope versus Randomness Generator: the parameters behind the verdict, then further details
ParameterMobile OscilloscopeRandomness Generator
Price$1.99Free — better
Rating5.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 30 monthsEvery 2 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size2 MB7 MB
Age rating4+4+
Developer怀卫 张Owned by Me

In-app purchases

None

Mobile Oscilloscope

No in-app purchases

None

Randomness Generator

No in-app purchases

Questions

Is Mobile Oscilloscope free?
Mobile Oscilloscope costs $1.99, with no in-app purchases.
Is Randomness Generator free?
Randomness Generator is free to download, with no in-app purchases.
Do Mobile Oscilloscope or Randomness Generator have ads?
Randomness Generator shows ads; Mobile Oscilloscope does not.
Which is updated more often, Mobile Oscilloscope or Randomness Generator?
Mobile Oscilloscope ships an update every 30 months, and Randomness Generator every 2 days. Most recently, Mobile Oscilloscope was updated on October 7, 2026 and Randomness Generator on October 12, 2026.

Other comparisons