Challenge Buddy vs PaperFlow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Challenge Buddy
This app is a social platform focused on self-improvement. Users can discover and join challenges related to fitness, finance, reading, and new habits. It connects individuals through shared goals without requiring invites.
- Discover self-improvement challenges
- Join fitness, finance, and habit challenges
- Connect with others pursuing similar goals
- Track progress on personal projects
- Positive social media feed
Read full descriptionHide full description
Challenge Buddy is a positive social app for people working on their goals. Instead of scrolling a feed that leaves you feeling worse, discover a community of people working on themselves — one challenge (or more) at a time. Create a challenge — a fitness streak, a reading habit, a no-spend month, anything. Pick how long it runs, and people who share the goal can jump in with you. • Discover public challenges by category: fitness, health, learning, creativity, lifestyle and more • Join others or start your own challenge in seconds • Check in each day with a quick note or a photo • Cheer people on with kudos and follow the group's progress in each challenge's activity • Chat with your challenge group to stay motivated and accountable • Share a challenge link to bring your friends along • Report and block tools help keep the community kind Less mindless scrolling. More progress, together.
PaperFlow
Read full descriptionHide full description
Write by hand and link like you type. A word you wrote becomes a link, your handwritten pages sit in the same graph as the notes you type, and one search reads both. CIRCLE A WORD. IT BECOMES A LINK. Lasso a word on the page, tap "Link to a note" and pick the note. That note lists the page under "Mentioned in". A link like [[Calculus II - notebook#page=12]] opens your handwriting on page 12. HANDWRITTEN AND TYPED, ONE GRAPH Every notebook you write is a node beside the notes you type, with links and backlinks both ways. Tap a node to see what it connects to. TYPE A WORD. FIND THE PAGE YOU WROTE. One search covers your handwriting, the notes you type and the text inside your PDFs. Your handwriting is read on your device, and it stays handwriting: it turns into text only when you ask. THE SYNTAX YOU ALREADY TYPE Wikilinks with autocomplete, note embeds, callouts, YAML properties, a templates folder, a daily note, LaTeX, Mermaid flowcharts and code blocks. Tabs, split panes, floating windows, a command palette and a quick switcher. PLAIN FILES, ON YOUR DEVICE Your notes are files: .md for what you type, .ink for what you write. The vault shows up in the Files app, every notebook exports to PDF or PNG, and the whole vault exports as a zip. Everything works offline, and two devices writing on the same page don't erase each other. A PEN WORTH WRITING WITH Press and the line thickens; tilt the pencil and it shades. Squeeze or double-tap Apple Pencil to switch tools, hover shows where the tip will land, and Pencil Pro's barrel roll turns the nib. Your palm leaves no mark. A different paper on every page. PDFS AND GOODNOTES NOTEBOOKS COME IN Import a PDF and write on top of it. Goodnotes notebooks open as PaperFlow notebooks. WHAT'S FREE, WHAT'S PLUS The notebook is free forever, with no page limit: writing, linking, search, the graph, import and export. That list doesn't shrink. PaperFlow Plus adds sync across your devices with a copy in the cloud, AI that suggests links up to a monthly allowance, and MCP access so your own AI assistant can read and write the vault once you allow it. 7 days free for new subscribers. PAPERFLOW PLUS Monthly or annual subscription with a free trial, renewed automatically until you cancel in your device Settings. The price is shown in the app before you confirm. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://paperflow.dev/privacy/en Support: https://paperflow.dev/support
Screenshots
Verdict
The clearest difference is in-app purchases: Challenge Buddy at none against PaperFlow's 3. PaperFlow's advantage is update cadence (every 3 days vs fortnightly). On price, ads, 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
Both are free to download. PaperFlow sells 3 in-app purchases, starting at $9.99 per month. Challenge Buddy asks for nothing beyond the download.
Challenge Buddy ships an update fortnightly, PaperFlow every 3 days. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.
| Parameter | Challenge Buddy | PaperFlow |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Fortnightly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 55 MB | 85 MB |
| Age rating | 12+ | 4+ |
| Developer | Fatemeh Yadollahzadehmansour | Freedom It |
In-app purchases
Challenge Buddy
No in-app purchases
PaperFlow
- PaperFlow Plus (Monthly)7 Days trial$9.991 Month
- PaperFlow Plus (Annual)7 Days trial$59.991 Year
- Founder Plan (lifetime)$99.90









