Comparison

Candle vs Invisible String

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

Head to head
About

Candle

This app helps couples deepen their connection through quick daily rituals. Engage with meaningful questions, share private photos, play games, and discover local date ideas to foster presence and curiosity in your relationship.

Highlights
  • Daily conversation starters
  • Private photo sharing
  • Syncing thumb kisses
  • Local date ideas
  • Relationship games and challenges
  • Daily check-in streaks
Features
Read full description

Candle – The Ultimate Couples Game for Staying Close Most relationships don’t end in one moment, they drift apart over time. Missed check-ins, surface-level conversations, busy lives, and routines replace real connection. Candle helps couples stay emotionally close through 1-minute daily rituals that bring back presence, play, and curiosity. Effortless Connection, Lasting Impact Whether you're long distance, busy, or just want to reconnect more deeply, Candle fits into your life. One minute a day is all it takes to strengthen your relationship. Conversation Starters That Matter - Swipe through meaningful, expert-designed questions - Unlock your partner’s answers to reflect, laugh, and grow together Daily Photo Prompts - Share real-time snapshots like BeReal, just for the two of you - Capture authentic moments and build a private photo journal - Create a visual history of your relationship over time- From lighthearted to deep, always have something to talk about Thumb Kisses - Tap your thumbs in sync to feel a gentle vibration - A playful way to say “I’m here,” even from miles away - Perfect for long-distance couples Curated Local Date Ideas (Beta) - 60+ unique ideas tailored to your location that refresh every week - Swipe to match on something new to try - Updated weekly with real-world, spontaneous experiences Games and Challenges - Play “Who’s More Likely,” fast-paced Q&As, and more - Discover new sides of each other in a low-pressure, fun format - Designed to spark joy and emotional connection Keep Your Streak, Keep Your Spark - Track daily check-ins and build a shared rhythm - Celebrate milestones and keep your momentum alive - Form long-term habits through small, consistent moments Perfect for Every Couple - Long-distance or living together - Just started dating or years in - Busy schedules or just needing more intentional time Private, Secure, and Ad-Free - No ads, no noise. Just time for each other - Encrypted and built privacy-first - Your memories stay between the two of you Why Couples Love Candle - Just one minute a day for real emotional impact - Based on relationship science and expert insights - Flexible for all stages of love and connection Download Candle today and bring back the spark, one question, one photo, one moment at a time. Visit: https://www.trycandle.app Privacy Policy: https://www.trycandle.app/privacy Terms: https://www.trycandle.app/terms Follow us: Instagram: @trycandle.app TikTok: @trycandle.app Reddit: r/candleapp Made with love in San Francisco. Shoutout to Fluent Emoji for the base icons!

About

Invisible String

Explore the hidden connections in your relationship by comparing geotagged photos with your partner. Discover shared locations and times you were near each other before officially meeting. Uncover the unique story of how fate may have brought you together.

Highlights
  • Compare geotagged photos
  • Find 'near miss' locations
  • Discover shared past moments
  • See proximity details
  • View side-by-side photos
  • Privacy-focused local comparison
Features
Read full description

Ever wonder if you and your partner crossed paths before you officially met? Invisible String reveals the hidden connections in your love story. HOW IT WORKS • Both partners scan their photo libraries to find geotagged photos • The app compares locations and timestamps to find "near misses" — times you were in the same place around the same time • Discover the coffee shop where you both grabbed lattes on the same Tuesday, or the concert where you stood just rows apart WHAT YOU'LL DISCOVER • The exact number of times your paths crossed • How close you came — sometimes just feet apart • The locations where fate brought you together • Side-by-side photos from your near-miss moments, once you and your partner choose to share them PRIVACY FIRST Matching uses only photo metadata (locations and timestamps), processed on your device. Your photos stay on your phone unless you choose to share them: you can send small previews of matched photos directly to your partner's phone over an encrypted device-to-device connection. You pick each photo, your partner accepts before anything is sent, and shared photos are stored only on your two devices. We never receive or store your photos on any server. PERFECT FOR • Couples curious about their "before we met" story • Anniversary gifts and relationship milestones • Anyone who believes in fate, destiny, or the invisible strings that connect us Unlock your complete love story and see just how many times the universe tried to introduce you before you finally met.

Screenshots

Candle4 screens
Invisible String4 screens

Verdict

The call

The clearest difference is review sentiment: Invisible String at 100% against Candle's 68%. Invisible String also leads on rating (5.0 vs 4.8). Candle's advantage is ratings volume (11K vs 2) and chart position (#160 vs unranked). On price, update cadence, ads and in-app purchases 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. Candle sells 24 in-app purchases, starting at $3.99 per 7 days and Invisible String sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Invisible String holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Candle has 11K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 68% of Candle's written reviews are positive against 100% of Invisible String's.

UpkeepUpdate frequency

Candle ships an update fortnightly, Invisible String every 3 weeks. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

Scorecard5 real differences · 6 level
Candle versus Invisible String: the parameters behind the verdict, then further details
ParameterCandleInvisible String
PriceFreeFree
Rating4.8 (11K ratings)5.0 (2 ratings) — better
Positive reviews67.7% of reviews100.0% of reviews — better
Number of ratings11K — better2
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#160 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better18.0
Further details — not scored
Size126 MB13 MB
Age rating17+12+
DeveloperEncore AI Labs, Inc.CatalystNeuro, LLC

Customer experience

Candle

All ratings11,445 ratings
Positive94.0%
Neutral2.6%
Negative3.3%
Written reviews588 reviews
Positive67.7%
Neutral8.7%
Negative23.6%

Invisible String

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

Bugs and requests

Candle

Requested features

1 request
  • Different decks or categories for prompts to mix things up

Invisible String

Not enough reviews yet to summarise bugs or requests.

In-app purchases

24 purchases

Candle

Subscriptions19
  • Pro Weekly$3.997 Days
  • Pro Weekly$4.997 Days
  • Premium Weekly$4.997 Days
Show 16 more
  • Pro Weekly$5.997 Days
  • Premium Weekly$5.997 Days
  • Premium Monthly$9.991 Month
  • Premium Monthly2 variants$12.991 Month
  • Premium Monthly3 Days trial$12.991 Month
  • Premium Monthly$14.991 Month
  • Premium Yearly$29.991 Year
  • Candle Pro - Yearly$29.991 Year
  • Premium Yearly2 variants$39.991 Year
  • Premium Yearly3 Days trial$39.991 Year
  • Premium Yearly7 Days trial$39.991 Year
  • Premium Yearly7 Days trial$49.991 Year
  • Premium Yearly$49.991 Year
  • Premium Yearly$59.991 Year
  • Premium Yearly3 Days trial$59.991 Year
  • Premium Yearly$89.991 Year
One-time5
  • Bag of Sparks (80)$0.99
  • Word Hint$0.99
  • Streak Reignite$2.99
Show 2 more
  • Bag of Sparks (500)$4.99
  • Pro Lifetime$149.99
2 purchases

Invisible String

One-time2
  • Unlock Your Story$2.99
  • Expansion pack$2.99

Questions

Is Candle free?
Candle is free to download, with in-app purchases available.
Is Invisible String free?
Invisible String is free to download, with in-app purchases available.
Which has better reviews, Candle or Invisible String?
Invisible String is rated higher. Candle averages 4.8 out of 5 from 11K ratings, while Invisible String averages 5.0 from 2 ratings.
Do Candle or Invisible String have ads?
Neither Candle nor Invisible String shows ads.
Which is updated more often, Candle or Invisible String?
Candle ships an update fortnightly, and Invisible String every 3 weeks. Most recently, Candle was updated on October 17, 2026 and Invisible String on October 7, 2026.

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