Bubble Index vs Perksly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bubble Index
This app provides a daily market sentiment index for stocks and cryptocurrencies. It uses visual bubble charts to display this data and offers a clean, lightweight interface with dark mode. No login or personal data is required to use its interactive features.
- Daily market sentiment index
- Visual bubble charts for stocks and crypto
- Clean, lightweight design
- Dark mode support
- No login or personal data collection
- Interactive bubbles
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Features: • Live market sentiment index (updated daily) • Visual bubble charts for stocks & crypto • Clean, lightweight design with dark mode • No login required, no personal data collected • Fun interactive bubbles you can tap and bounce Data sources: • CNN Money Fear & Greed Index (https://money.cnn.com/data/fear-and-greed/) • Alternative.me Crypto Fear & Greed Index (https://alternative.me/crypto/fear-and-greed-index)
Perksly
This app helps premium credit card holders maximize their benefits by tracking and reminding them about expiring credits and perks. It offers insights into card value and ensures you don't miss out on any of the benefits you're paying for.
- Tracks monthly, quarterly, semi-annual, and annual credits
- Shows available, used, and at-risk credits
- Sends smart reminders before credits expire
- Logs always-on perks like lounge access and elite status
- Catalog of 200+ U.S. credit cards
- Insights by card, category, or issuer
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Stop leaving money on the table. If you have premium credit cards, you're paying real money for real benefits — but most people use less than half of what their cards offer. Perksly is a private, on-device tracker that helps you actually use every credit, every perk, every month. WHAT PERKSLY DOES • Tracks monthly, quarterly, semi-annual, and annual credits across your wallet • Shows what's Available, Used, and At Risk of Expiring at a glance • Sends smart reminders before credits expire so you don't forget • Logs always-on perks (lounge access, elite status, insurance, no foreign transaction fees) • Built-in catalog of 200+ U.S. credit cards from major issuers • Catalog updates automatically as new cards launch and benefits change INSIGHTS THAT MATTER Slice your wallet's value by card, by category (dining, hotel, airline, transport), or by issuer. See which benefits you've earned this period and which you're at risk of losing before they reset. PRIVATE BY DESIGN Perksly stores everything on your device. No accounts to create, no data sent to our servers (we don't have any), no analytics, no ads, no tracking. Your card information never leaves your iPhone. FREE TO USE Perksly is free, with no ads and no tracking. Just an app to help you get the value you're already paying for. PERFECT FOR • Premium card holders who can't keep all the credits straight • Travelers tracking annual airline credits and hotel benefits • Anyone with multiple cards across different issuers • People who want to maximize their card portfolio without spreadsheets Add your first card in 30 seconds. Never let a benefit expire again.
Screenshots
Verdict
The clearest difference is review sentiment: Perksly at 100% against Bubble Index's 0%. Perksly also leads on rating (5.0 vs 4.6). Bubble Index's advantage is iOS requirement (18.4 vs 26.1). On price, ratings volume, update cadence and ads 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. Neither carries in-app purchases, so what you see is what you pay.
Perksly holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews point the same way: 0% of Bubble Index's written reviews are positive against 100% of Perksly's.
Bubble Index ships an update every 2 months, Perksly monthly. The most recent releases landed on September 16, 2026 and October 1, 2026 respectively.
| Parameter | Bubble Index | Perksly |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (5 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 — better | 3 |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 18.4 — better | 26.1 |
| Further details — not scored | ||
| Size | 3 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Hyunseok Jang | Wei-Ting Liao |
Customer experience
Bubble Index
Perksly
In-app purchases
Bubble Index
No in-app purchases
Perksly
No in-app purchases









