Comparison

Bubble Index vs Perksly

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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)

About

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.

Highlights
  • 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
Features
Read full description

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

Bubble Index4 screens
Perksly4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Bubble Index ships an update every 2 months, Perksly monthly. The most recent releases landed on September 16, 2026 and October 1, 2026 respectively.

Scorecard3 real differences · 7 level
Bubble Index versus Perksly: the parameters behind the verdict, then further details
ParameterBubble IndexPerksly
PriceFreeFree
Rating4.6 (5 ratings)5.0 (3 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings5 — better3
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone
Requires iOS18.4 — better26.1
Further details — not scored
Size3 MB20 MB
Age rating4+4+
DeveloperHyunseok JangWei-Ting Liao

Customer experience

Bubble Index

All ratings5 ratings
Positive80.0%
Neutral20.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

Perksly

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Bubble Index

No in-app purchases

None

Perksly

No in-app purchases

Questions

Is Bubble Index free?
Bubble Index is free to download, with no in-app purchases.
Is Perksly free?
Perksly is free to download, with no in-app purchases.
Which has better reviews, Bubble Index or Perksly?
Perksly is rated higher. Bubble Index averages 4.6 out of 5 from 5 ratings, while Perksly averages 5.0 from 3 ratings.
Do Bubble Index or Perksly have ads?
Neither Bubble Index nor Perksly shows ads.
Which is updated more often, Bubble Index or Perksly?
Bubble Index ships an update every 2 months, and Perksly monthly. Most recently, Bubble Index was updated on September 16, 2026 and Perksly on October 1, 2026.

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