Comparison

Postfun vs Ontheside

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

Head to head
About

Postfun

Connect with people globally by exchanging real paper postcards. Discover new friends, collect unique cards and stamps, and share a piece of your world. The more you send, the more you receive.

Highlights
  • Send and receive real postcards
  • Connect with international users
  • Collect cards and stamps
  • Discover new cultures
  • Global postcard community
Features
Read full description

Discover the joy of real postcard exchange! With Postfun, you can send and receive real paper postcards from people all around the world. Find new friends, collect beautiful cards and stamps, and share a piece of your world with others. --- HOW IT WORKS 1. Request an address and a unique Postcard ID in the app. 2. Write and send a real postcard to the address you received. 3. When your postcard arrives, another Postfun user will send one back to you! 4. Register the Postcard ID when you receive a card and thank the sender. 5. Keep sending and receiving postcards — the more you send, the more you get! --- WHY YOU’LL LOVE POSTFUN • Exchange real postcards — not digital ones • Connect with people from different countries • Discover new cultures and languages • Collect cards and unique stamps • Enjoy a relaxing, creative hobby loved by millions --- Join the global postcard community and make someone’s day with a card! Start your postcard journey today — with Postfun! --- SUBSCRIPTION PRICING AND TERMS Postfun offers two auto-renewing subscription options: $2.99 per month $24.99 per year These prices are for United States customers. Pricing in other countries may vary and actual charges may be converted to your local currency depending on the country of residence. The subscription will automatically renew unless turned off in your Apple Account Settings at least 24 hours before current period ends. You can go to your Apple Account settings to manage your subscription and turn off auto-renew. Your Apple Account will be charged when the purchase is confirmed. Read the terms and conditions here - https://ostasoft.com/postfun/terms Read the privacy policy here - https://ostasoft.com/postfun/policy

About

Ontheside

Features
Read full description

Ontheside is a global sports content platform made for athletes and fans. From everyday routines to elite preparation, Ontheside athletes share what happens outside the spotlight and bring fans closer to the process and passion. FEATURE HIGHLIGHTS Explore authentic athlete content: Share and discover real-world stories, training tips, behind-the-scenes videos, nutrition insights, and more—from aspiring athletes to seasoned competitors. 6 powerful ways for athletes to share their journey: Ontheside athletes can share their journey, teach their craft, and grow their community all in one place: * Spotlight allows you to post quick training moments and behind-the-scenes highlights. * Create a deeper recurring video or podcast series with Episodes. * Break down technique side-by-side using SplitSync. * Share mindset lessons and performance insights through long-form Articles. * Build step-by-step training systems with structured Guides. * Bring your supporters together by sharing your Events calendar. Monetize your content: Athletes can earn sponsorship revenue by sharing what they know and love — and receive up to 80% of sponsorship proceeds. Engage and support: Curate your home feed when you follow athletes. Like, comment and share their content, and become part of their journey as they chase big goals. HOW IT WORKS Create your Profile: Let your fans step into your world. Build your Profile to showcase your athletic journey and build your brand over time. Share your sport, story, goals, and accomplishments. Post content: Whether it’s a day in your life, insights from competitions, your latest workouts, answering fan questions, or promoting a cause you’re passionate about; build your sports community around the things that make you, you. Earn support: Turn your passion into meaningful earning opportunities. Get sponsored by brands with a sponsored ad in front of your public content. WHY ONTHESIDE? Ontheside is by athletes, for athletes — a sports-only hub where credibility based on experience matters most and where fans fuel growth, inspiration, and possibilities.

Screenshots

Postfun4 screens
Ontheside3 screens

Verdict

The call

The clearest difference is in-app purchases: Ontheside at none against Postfun's 2. Ontheside also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 6 weeks). On price 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. Postfun sells 2 in-app purchases, starting at $2.99 per month. Ontheside asks for nothing beyond the download.

UpkeepUpdate frequency

Postfun ships an update every 6 weeks, Ontheside every 2 weeks. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Postfun versus Ontheside: the parameters behind the verdict, then further details
ParameterPostfunOntheside
PriceFreeFree
Rating4.4 (61 ratings) — better—
Positive reviews70.3% of reviews—
Number of ratings61 — better—
Update frequencyEvery 6 weeksEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationAd-supported—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.615.0 — better
Further details — not scored
Size45 MB32 MB
Age rating9+4+
DeveloperIlya OstashkovOntheside, Incorporated

In-app purchases

2 purchases

Postfun

Subscriptions2
  • Postfun - Monthly subscription$2.991 Month
  • Postfun - Annual subscription$29.991 Year
None

Ontheside

No in-app purchases

Questions

Is Postfun free?
Postfun is free to download, with in-app purchases available.
Is Ontheside free?
Ontheside is free to download, with no in-app purchases.
Do Postfun or Ontheside have ads?
Postfun shows ads; Ontheside does not.
Which is updated more often, Postfun or Ontheside?
Postfun ships an update every 6 weeks, and Ontheside every 2 weeks. Most recently, Postfun was updated on November 2, 2026 and Ontheside on October 31, 2026.

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