90 days or 100?
Both get you through the whole Bible in about three months. The difference is how the day is measured.
The Bible in 90 Days is a program started by Ted Cooper Jr., who left his career in 2002 to lead it. Readers go through 12 pages a day in a specially marked edition of the Bible published by Zondervan, with start and end markers printed on the pages. A participant's guide and a church curriculum with DVDs and a leader's guide are sold alongside it. Many churches have run it, and if yours already owns the kit, it is a good way to go through the Bible together.
The 100 day plan on this site measures by chapters instead of pages: 1,189 chapters cut into 100 even portions, 11 or 12 a day (about 33 minutes at an average reading speed), in Bible order. It is the same plan as the Whole Bible in 100 Days in the BibleDo app. Because it counts chapters, it works in any Bible you already own, in any translation, on paper or on a phone.
Side by side
| Bible in 90 Days | 100 Day Bible | |
|---|---|---|
| Daily portion | 12 pages of its own edition | 11 or 12 chapters |
| Bible needed | The marked edition | Any complete Bible |
| Order | Genesis to Revelation | Genesis to Revelation |
| Group material | Participant's guide, DVD curriculum | 14 free week guides and a sign-up sheet |
| Cost | The book and kit | Free |
Which to choose
Choose the 90 day program if your church is running it, or if you want a printed edition where the day's stopping point is marked on the page and a video curriculum for the group.
Choose the 100 day plan if you want to use the Bible you already have, read on a phone, or listen along. The extra ten days take a little pressure off each day, and a dated today page and a printable chart keep your place without an app.
Either way, the hard part is the same: Leviticus in week two and the long prophets in weeks nine to eleven. Pick a start date, tell someone, and keep going on the days it feels slow.