01 / 05
Just the year. One guess per photo.
The exact year scores 1,000 points. Points fall off with distance and reach 0 at 60 years off. Closer is better.
DECADE
Five historical photos. One guess per photo.
A quick daily: guess each year, score out of 5,000, share a card that never spoils the answers.
FREE: TODAY'S DAILY SET, EVERY DAY · ONE EXTRA PRACTICE SET A DAY · STREAK TRACKING
HOW IT WORKS
Study the photo. Guess the year.
-
01
Study the photo.
Each set is five historical photos, the same five for everyone. Every frame comes with a caption. Take your time with it.
PHOTO 1 OF 5 · STUDY THE PHOTO -
02
Pick a year. Lock it in.
Drag the slider from 1850 to the current year, or type four digits. Then lock it in. One guess per photo.
DRAG OR TYPE A YEAR -
03
See how close you got.
Each reveal shows YOU GUESSED, ACTUAL and POINTS, with the caption and historical context. After five photos, your total out of 5,000.
THE REVEAL 5 OF 5 COMPLETE · SAMPLE RESULT
WHAT MAKES IT DIFFERENT
One photo. Guess the year.
02 / 05
Same five photos for everyone.
A new set every day. Solve them, then compare your results.
03 / 05
A share card that never spoils.
Your score and a swatch per photo: exact, too early or too late. Never the year. Share it to iMessage or Instagram.
04 / 05
Real history, not generated.
Photos drawn from public archives. Library of Congress and Wikimedia Commons lead the collection.
05 / 05 · COLLECTION
Everyday America
10 sets with 50 historical images, including one free sample set. The collection covers 1935–1943 and 1972–1973. It does not represent every year in between.
US App Store. Included with Decade Pro while your subscription is active. Price shown in the app before purchase.
1935–1943
1972–1973
10 SETS · 50 IMAGES · 1 FREE SAMPLE SET
A REAL SAMPLE
Decade #99, developed.
One sample run of a daily set: five frames, five guesses, one exact year.
DECADE #99 · 5 EXPOSURES
SAMPLE RESULT · 4,612 / 5,000
-
PHOTO 1 OF 5
March along highway bridge, law enforcement present
1966 → 1965 +914
-
PHOTO 2 OF 5
Actress Joan Crawford on the arm of Louis B Mayer
1954 → 1953 +914
-
PHOTO 3 OF 5
Mars helicopter on sol 46
2019 → 2021 +870
-
PHOTO 4 OF 5
Street protest crowd, Tunisia, demonstrators with signs
2011 EXACT +1,000 -
PHOTO 5 OF 5
Two operations, “breaking” and “scutching”
1944 → 1945 +914
DECADE
#99
GUESS THE YEAR · 5 PHOTOS
4,612
/ 5,000 · 1 DAY STREAK
- 01 TOO LATE ↓
- 02 TOO LATE ↓
- 03 TOO EARLY ↑
- 04 EXACT √
- 05 TOO EARLY ↑
PLAY FREE ON THE APP STORE
renolabshq.com/decade
FAQ
Questions
- How do I play a guess-the-year photo game on iPhone?
- Study the photo, drag the slider (1850 to the current year) or type a year, and lock it in. One guess per photo, five photos a set.
- How is Decade scored?
- Up to 1,000 points per photo and 5,000 per set. The exact year scores 1,000; points fall off with distance, reaching 0 at 60 years off.
- Where do the photos come from?
- Library of Congress and Wikimedia Commons lead the collection. Real history, not generated. Credits for collection photos are shown after each set.
- Is Decade free?
- Today's daily set, every day, plus one extra practice set a day and streak tracking. Decade Pro adds unlimited sets from the archive and full play history and detailed stats. Price shown in the app before purchase.
- Does the share card spoil the answers?
- No. It shows your score, a color swatch per photo and too early, too late or exact. Never the year.
- Can I replay past days?
- Yes. Played days stay in your archive calendar and can be replayed. Free players get one extra set a day; Decade Pro is unlimited.
