Comparison

BuyBye vs 100 Envelope Challenge

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

Head to head
About

BuyBye

This app helps you curb impulse spending by showing the real cost of purchases in terms of work hours. It offers features to pause buying decisions and block shopping apps, encouraging intentional spending and savings tracking.

Highlights
  • Visualize purchase cost in work hours
  • Cooldown period for impulse buys
  • Block shopping apps
  • Savings tracking
  • 100 Envelope Savings Challenge
  • Milestone rewards
Features
Read full description

Budgeting is better with your pig. Meet Penny, your money buddy in BuyBye. She earns rewards when you make better money choices, helping budgeting feel more fun, motivating, and a little less overwhelming. BuyBye is the budgeting app that shows you the real cost of your spending. Not just in dollars, but in hours of your life. Most budgeting apps track your money. BuyBye helps you decide how to use it. Use BuyBye to: -Set a monthly budget and see what’s left to spend -Track income, expenses, savings, bills, and no-buy days -Use the Worth It? Analyzer to see what purchases cost in work time -See what your money could become if you invested it instead -Pause impulse buys with Cooldown -Temporarily block shopping apps with Shop Block using Apple’s built-in controls -Create savings goals for travel, an emergency fund, or anything else -Try the 100 Envelope Savings Challenge -Earn rewards with Penny as you build better money habits Subscription Information: Some features in BuyBye require an active subscription. This includes adding income and savings to your BuyBye budget. Subscription terms and pricing are available in the app. Terms of Use: https://www.apple.com/legal/internet-services/itunes/appstore/dev/stdeula/

About

100 Envelope Challenge

This app gamifies saving money by letting you track progress on various savings challenges, like the 100 Envelope Challenge. It offers visual feedback and customizable options to keep you motivated. Unlock all features with a one-time purchase.

Highlights
  • Gamified savings progress visualization
  • Customizable challenge rules
  • Multiple savings challenge types
  • Streak tracking and motivation tools
  • Home Screen widget for goal visibility
  • Optional daily reminders
Features
Read full description

Save $5,050 in 100 days — and actually enjoy doing it. The 100 Envelope Challenge is the savings method taking over TikTok, now a beautiful app for your iPhone. Number your envelopes 1 to 100, draw one each day, and stuff in that amount of cash. Fill all 100 and you've saved $5,050 — one small, satisfying step at a time. No bank linking. No account. Just you, your envelopes, and a wall that turns green as your savings grow. 【Saving that feels like a game】 Draw an envelope, flip it open, and watch the confetti fly. Every envelope you stuff turns green on your wall, your progress ring climbs, and your total ticks up — a little hit of motivation every single day. 【Play at your own pace】 Draw a random envelope or pick any one yourself. Save one a day, several at once, or catch up after a busy week. Stuffed a little more or less than the envelope said? Adjust the amount. It's your challenge, your rules. 【Stay motivated to the finish】 Track your current and longest streaks, see your savings curve climb over time, and get a projected finish date based on your real pace. An optional daily reminder keeps your streak alive, and a Home Screen widget keeps your goal in sight. 【More than one way to save】 Beyond the classic 100 Envelope Challenge, take on the 52-Week Challenge, the Penny Challenge, a Double It run, or build a fully custom challenge with your own amounts and length. 【Pay once. No subscription.】 Envelope100 is free to start. Unlock every challenge, remove ads, and run multiple challenges at once with a single one-time purchase — no subscriptions, no recurring charges, ever. Start your first envelope today and watch $5,050 add up faster than you'd think. 【Terms of Use (EULA)】 https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

BuyBye4 screens
100 Envelope Challenge4 screens

Verdict

The call

The clearest difference is monetization model: 100 Envelope Challenge at free with in-app purchases against BuyBye's subscription. 100 Envelope Challenge also leads on rating (5.0 vs 4.5). BuyBye's advantage is update cadence (fortnightly vs every 3 months) and ratings volume (1.8K vs 4). On price, ads, in-app purchases and device support 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. BuyBye sells 10 in-app purchases, starting at $3.99 per 7 days and 100 Envelope Challenge sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

100 Envelope Challenge holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: BuyBye has 1.8K ratings behind it against 4, so its average is the more settled of the two.

UpkeepUpdate frequency

BuyBye ships an update fortnightly, 100 Envelope Challenge every 3 months. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
BuyBye versus 100 Envelope Challenge: the parameters behind the verdict, then further details
ParameterBuyBye100 Envelope Challenge
PriceFreeFree
Rating4.5 (1.8K ratings)5.0 (4 ratings) — better
Positive reviews10.7% of reviews—
Number of ratings1.8K — better4
Update frequencyFortnightly — betterEvery 3 months
AdsYesYes
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.0
Further details — not scored
Size62 MB11 MB
Age rating4+4+
DeveloperBuyBye Inc.Ikuhei Kure

Customer experience

BuyBye

All ratings1,724 ratings
Positive87.1%
Neutral3.4%
Negative9.5%
Written reviews215 reviews
Positive10.7%
Neutral2.8%
Negative86.5%

100 Envelope Challenge

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

BuyBye

Reported bugs

1 issue
  • Too many pop-ups

100 Envelope Challenge

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

BuyBye

Subscriptions9
  • BuyBye Weekly Plan$3.997 Days
  • BuyBye Monthly Plan3 Days trial$5.991 Month
  • BuyBye Quarterly Plan$9.993 Months
Show 6 more
  • BuyBye Yearly Winback7 Days trial$19.991 Year
  • BuyBye Yearly Plan3 Days trial$19.991 Year
  • BuyBye Yearly Plan3 Days trial$23.991 Year
  • BuyBye Yearly Plan3 Days trial$26.991 Year
  • BuyBye Yearly Plan7 Days trial$29.991 Year
  • BuyBye Yearly Plan3 Days trial$29.991 Year
One-time1
  • BuyBye Lifetime$29.99
1 purchases

100 Envelope Challenge

One-time1
  • Premium$4.99

Questions

Is BuyBye free?
BuyBye is free to download, with in-app purchases available.
Is 100 Envelope Challenge free?
100 Envelope Challenge is free to download, with in-app purchases available.
Which has better reviews, BuyBye or 100 Envelope Challenge?
100 Envelope Challenge is rated higher. BuyBye averages 4.5 out of 5 from 1.8K ratings, while 100 Envelope Challenge averages 5.0 from 4 ratings.
Do BuyBye or 100 Envelope Challenge have ads?
Both BuyBye and 100 Envelope Challenge show ads.
Which is updated more often, BuyBye or 100 Envelope Challenge?
BuyBye ships an update fortnightly, and 100 Envelope Challenge every 3 months. Most recently, BuyBye was updated on November 8, 2026 and 100 Envelope Challenge on October 31, 2026.

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