Comparison

TonePlayer vs MonDiary

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

Head to head
About

TonePlayer

Generate and save audio tones across a wide frequency range. Explore different waveform types and customize amplitude. Save favorite frequencies and export tones as WAV files.

Highlights
  • Generate tones from 20 Hz to 22050 Hz
  • Select from Sine, Square, Triangle, and Sawtooth waveforms
  • Export tones to WAV files
  • Adjust audio sample amplitude
  • Save favorite frequencies
  • Includes built-in healing frequencies
Features
Read full description

Play audio tones for various waveform types and frequencies. Some believe that exposure to various sound frequencies can alleviate stress, promote spiritual development and turn negative emotions positive. Possibly transforming grief into joy, restoring equilibrium, awaken intuition and bring spiritual balance. Experience the vibrational power of the numbers 3, 6 and 9 in the frequencies 396 Hz, 639 Hz and 963 Hz. Tones are the foundation of all music, mathematically expressed by the theory of Fourier Series. Frequencies may be selected as follows: • Smoothly and continuously from a slider • Entered directly with keyboard into a text field • Selected from a table of note buttons labelled A0 to B8, in the standard piano keyboard and grouped in octave 0 to octave 8 • Choose from the factory default list of recommended special frequencies, including 396 Hz, 639 Hz and 963 Hz Features: • Choose frequencies in the range 20 Hz to 22050 Hz • Export the current frequency tone to a WAV file of various durations: 1, 2, 3, 4, 5, 10, 30, 60 and 300 seconds • Specify the amplitude of the audio samples from 0 to 1.0. Note that this affects volume of the tone, but not through the device volume control - the actual audio samples are reduced to the chosen maximum value. • Use a smooth playing continuous slider to choose frequency in the valid frequency range • Select from waveform types: Sine Square Square Fourier Triangle Triangle Fourier Sawtooth Sawtooth Fourier The 'Fourier` alternatives are smooth Fourier series approximations to their counterparts with the same prefix, creating tones of a milder type. • Increment frequencies with a stepper control increments of 1000.0, 100.0, 10.0, 1.0, 0.1, 0.01, 0.001, or use the `x ½` and `x 2` buttons to halve and double • Directly type the frequency in the valid frequency range into the TextField • Save your favorite frequencies in a list • Add a set of built-in frequencies that are claimed to be particularly effective in stimulating inner healing, including Solfeggio Frequencies. • The frequencies included in the 'Healing` menu are : 40 Hz, 174 Hz, 285 Hz, 396 Hz, 417 Hz, 432 Hz, 440 Hz, 528 Hz, 639 Hz and 963 Hz. • AirPlay is supported.

About

MonDiary

Read full description

Transform your mental health with MonDiary, the secure mood diary designed for emotional wellness. Track your daily mood, practice gratitude journaling, and gain deep insights into your mental health journey with our private journal app. MonDiary is your personal wellness companion that combines the power of a traditional diary with modern mood tracking technology. Whether you're seeking to improve your mental health, build a gratitude practice, or simply keep your thoughts secure and private, MonDiary provides the perfect sanctuary for self-reflection. KEY FEATURES Multi-Layer Security Your diary stays completely private with biometric authentication (fingerprint, face recognition), PIN codes, and pattern locks. We take your privacy seriously, your journal entries are encrypted and stored securely on your device. Mood Tracking & Insights Track your emotional wellness daily with our intuitive mood journal. Visualize your emotional patterns over time and gain psychological insights into what affects your wellbeing. Our wellness tracker helps you understand your mental health trends and progress. Gratitude Practice Build a daily gratitude journal habit that transforms your mindset. Research shows that regular gratitude practice improves mental health, reduces stress, and increases overall happiness. Make gratitude journaling effortless with MonDiary. Rich Customization • 20 beautiful themes (13 premium) • 119 premium backgrounds • 161 stickers across 6 collections • Customizable fonts and layouts • Create your perfect digital diary aesthetic Multimedia Entries Enhance your journal with photos, videos, audio recordings, and drawings. Capture life's moments in multiple formats and create a rich, multi-sensory diary experience. Cloud Backup Never lose your precious memories. Automatic cloud backup to Google Drive keeps your journal safe and accessible across all your devices. Psychological Insights Access advanced emotional intelligence analysis with premium features. Our insight widgets help you understand your emotional patterns, track personal growth, and monitor your mental wellness journey. Daily Reminders & Streaks Build a consistent journaling habit with customizable daily reminders. Track your writing streaks and celebrate your commitment to self-care and emotional wellness. PREMIUM SUBSCRIPTION Unlock the full power of MonDiary with Premium: • 13 premium themes for ultimate personalization • 161 stickers to express your emotions • 4 advanced psychological insight widgets • Unlimited media storage for photos, videos, and audio • Automatic cloud backup for peace of mind • Priority support from our team WHY CHOOSE MONDIARY? MonDiary is trusted by thousands of users who prioritize their mental health and privacy. Unlike other journal apps, we combine robust security with powerful wellness features. Your diary is completely private we never access your entries or share your data. Perfect for: • Mental health tracking and self-care • Daily gratitude practice • Mood journaling and emotional awareness • Secure private journaling with password protection • Therapy journaling and psychological reflection • Mindfulness and personal growth START YOUR JOURNEY TODAY Download MonDiary now and discover the transformative power of regular journaling, mood tracking, and gratitude practice. Your path to better mental health and emotional wellness starts here. Read our full Terms of Use and our Privacy Policy: Terms of Use: https://mondiary.app/terms Privacy Policy: https://mondiary.app/privacy

Screenshots

TonePlayer2 screens
MonDiary4 screens

Verdict

The call

The clearest difference is in-app purchases: TonePlayer at none against MonDiary's 2. TonePlayer also leads on ads (none vs shown). On price, update cadence, 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

Both are free to download. MonDiary sells 2 in-app purchases, starting at $1.99 per 7 days. TonePlayer asks for nothing beyond the download.

UpkeepUpdate frequency

TonePlayer ships an update every 11 days, MonDiary every 8 days. The most recent releases landed on October 4, 2026 and October 16, 2026 respectively.

Scorecard2 real differences · 8 level
TonePlayer versus MonDiary: the parameters behind the verdict, then further details
ParameterTonePlayerMonDiary
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 11 daysEvery 8 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.015.0
Further details — not scored
Size1 MB118 MB
Age rating4+12+
DeveloperLimit Point SoftwareUKGADGETS LTD

In-app purchases

None

TonePlayer

No in-app purchases

2 purchases

MonDiary

Subscriptions2
  • MonDiary Pro (Weekly)3 Days trial$1.997 Days
  • MonDiary Pro (Annual)$12.991 Year

Questions

Is TonePlayer free?
TonePlayer is free to download, with no in-app purchases.
Is MonDiary free?
MonDiary is free to download, with in-app purchases available.
Do TonePlayer or MonDiary have ads?
MonDiary shows ads; TonePlayer does not.
Which is updated more often, TonePlayer or MonDiary?
TonePlayer ships an update every 11 days, and MonDiary every 8 days. Most recently, TonePlayer was updated on October 4, 2026 and MonDiary on October 16, 2026.

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